沥青加铺旧水泥混凝土路面的层间受力  

Interlayer Stress of Existent Cement Concrete Pavement Overlaid with Asphalt

作　　者：袁玉卿[1,2] 贾淼[1,2] 郭斌[1,2] 许海铭[1,2] YUAN Yu-qing JIA Miao GUO Bin XU Hai-ming(Institute of Materials and Structures, Henna University, Kaifeng 475004, Henan, China School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, Henan, China)

机构地区：[1]河南大学材料与结构研究所,河南开封475004 [2]河南大学土木建筑学院,河南开封475004

出　　处：《筑路机械与施工机械化》2017年第3期53-57,共5页Road Machinery & Construction Mechanization

基　　金：河南省科技发展项目(162102210026);河南大学科研基金项目(2016S12);河南省教育厅自然科学研究计划项目(2011A580001)

摘　　要：为了研究旧水泥路面沥青加铺层层间力学特性,借助ABAQUS分析了沥青加铺层厚度、模量及裂缝对层间应力的影响。结果表明:在静荷载作用下,沥青加铺层层底竖直方向上的剪应力最大值都出现在荷载正下方;增大沥青加铺层的厚度能明显减小层底应力;沥青加铺层的弹性模量对层底应力的影响很小;沥青面层底部的最大主应力受裂缝的影响变化在1%~2%,而沥青面层底部竖直方向上的最大剪应力值受裂缝影响变化在53%~58%。To explore the interlayer mechanical properties between the existent cement concrete pavement and asphalt overlay, the mechanical model was established by ABAQUS. The impact of the thickness, modulus and fracture of asphalt overlay on the interlayer stress was analyzed. The results show that the maximum shear stress in the vertical direction of the asphalt overlay is exactly below the load; the stress of the layer is obviously reduced by increasing the thickness of asphalt overlay; the elastic modulus of asphalt overlay has little influence on the bottom stress; the maximum principal stress at the bottom of the asphalt pavement is affected by the cracks at 1%-2 %, while the maximum shear stress at the bottom of the asphalt pavement is affected by the cracks at 53%-58%.

关 键 词：道路工程 沥青加铺 层底应力 有限元分析 

分 类 号：U416.01[交通运输工程—道路与铁道工程]